543804081315840 has 1344 divisors, whose sum is σ = 2079951857624160. Its totient is φ = 130809939886080.

The previous prime is 543804081315827. The next prime is 543804081315841. The reversal of 543804081315840 is 48513180408345.

It is a happy number.

543804081315840 is a `hidden beast` number, since 5 + 4 + 3 + 8 + 0 + 40 + 8 + 13 + 1 + 584 + 0 = 666.

It can be written as a sum of positive squares in 16 ways, for example, as 10242867400704 + 533561213915136 = 3200448^2 + 23098944^2 .

It is not an unprimeable number, because it can be changed into a prime (543804081315841) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 24898303320 + ... + 24898325160.

Almost surely, 2^{543804081315840} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 543804081315840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1039975928812080).

543804081315840 is an abundant number, since it is smaller than the sum of its proper divisors (1536147776308320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

543804081315840 is a wasteful number, since it uses less digits than its factorization.

543804081315840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22061 (or 22034 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 54.

The spelling of 543804081315840 in words is "five hundred forty-three trillion, eight hundred four billion, eighty-one million, three hundred fifteen thousand, eight hundred forty".